int swapSongsInPlaylistById(FILE * fp, int id1, int id2) {
checkSongId(id1);
checkSongId(id2);
return swapSongsInPlaylist(fp, playlist.idToPosition[id1],
playlist.idToPosition[id2]);
}
void MusicPlayer::playCurrent()
{
// Plays the song with the current song ID
if (!checkNoMusic())
{
checkSongId();
play(currentSongId);
}
}
int playPlaylistById(FILE * fp, int id, int stopOnError) {
if(id == -1) {
return playPlaylist(fp, id, stopOnError);
}
checkSongId(id);
return playPlaylist(fp, playlist.idToPosition[id], stopOnError);
}
int playlistId(FILE * fp, int id) {
int i;
int begin = 0;
int end = playlist.length;
if(id>=0) {
checkSongId(id);
begin = playlist.idToPosition[id];
end = begin+1;
}
for(i=begin; i<end; i++) printPlaylistSongInfo(fp, i);
return 0;
}
void MusicPlayer::nextSongId()
{
++currentSongId;
checkSongId();
}
int deleteFromPlaylistById(FILE * fp, int id) {
checkSongId(id);
return deleteFromPlaylist(fp, playlist.idToPosition[id]);
}
int seekSongInPlaylistById(FILE * fp, int id, unsigned time) {
checkSongId(id);
return seekSongInPlaylist(fp, playlist.idToPosition[id], time);
}
int moveSongInPlaylistById(FILE * fp, int id1, int to) {
checkSongId(id1);
return moveSongInPlaylist(fp, playlist.idToPosition[id1], to);
}
